this is a little little tutorial on how to increase your vegetation performance impact on FPS:

QUOTE

I noticed one thing:

What really causes lag is the Pixel shader and Vertex Shader of the _ca texture (the vegetation): they normally have VertexShader: NormalMapSpecularThroughNoFade and PixelShader: NormalMapSpecularThrough.

If instead of that PixelShader, we add the simple PixelShader: NormalMapThrough but with the flag NoAlphaWrite, we will have the SAME effect, but with an increase of FPS and performance